Weighing scale



FIG. 1 is a top and right front perspective view of a weighing scale showing my new design;

FIG. 2 is a right side perspective view thereof;

FIG. 3 is a left side perspective view thereof;

FIG. 4 is a front perspective view thereof;

FIG. 5 is a top plan view thereof, the bottom being conventionally plain and unornamental; and

FIG. 6 is a rear elevational view thereof. 

The ornamental design for a weighing scale, substantially as shown. 